Certain genetic diseases are more prevalent among certain...

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towerSpider: Master | Next Rank: 500 Posts; Posts: 155; Joined: Mon Dec 13, 2010 11:02 am; Thanked: 3 times

by towerSpider » Mon Feb 07, 2011 5:03 am

Certain genetic diseases are more prevalent among certain ethnic populations. For example, Tay Sachs disease, a usually fatal genetic condition caused by the build-up of gangliocides in nerve cells, occurs more frequently among Ashkenazi Jews than among the general population

hi. the book (manhattan) says that there is no conclusion in this stimulus but to me the first sentence very clearly and evidently appears a conclusion. what's your take? thanks.

People are not prisoners of fate, but prisoners of their own mind.

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Source: Beat The GMAT — Critical Reasoning | Mon Feb 07, 2011 5:03 am

Night reader: Legendary Member; Posts: 1337; Joined: Sat Dec 27, 2008 6:29 pmFollowed by: 10 members; Thanked: 127 times

by Night reader » Thu Mar 24, 2011 9:03 pm

One simple and effective way, when in doubt if a fragment of the argument is conclusion, is to perform WHY test. Let's see, we doubt the first sentence: "Certain genetic diseases are more prevalent among certain ethnic populations."

Now let's perform the WHY test and look for answer in the rest of argument ...

WHY Certain genetic diseases are more prevalent among certain ethnic populations?

If some one is able to aanswer this question by using the below quoted statements, then Yes we have the argument. To me, there's no argument.

towerSpider wrote:Certain genetic diseases are more prevalent among certain ethnic populations. For example, Tay Sachs disease, a usually fatal genetic condition caused by the build-up of gangliocides in nerve cells, occurs more frequently among Ashkenazi Jews than among the general population

hi. the book (manhattan) says that there is no conclusion in this stimulus but to me the first sentence very clearly and evidently appears a conclusion. what's your take? thanks.

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Tani: Legendary Member; Posts: 1255; Joined: Fri Nov 07, 2008 2:08 pmFollowed by: 90 members; Location: St. Louis; Thanked: 312 times

by Tani » Thu Mar 24, 2011 9:20 pm

The first sentence is a statement of fact, which is in turn supported by the example.

In an argument the direction of the reasoning is from the facts/evidence to the conclusion. You could say that someone, at some time in the past, reached the conclusion that genetic diseases are ethnically-linked by looking at examples such as Tay-Sachs, but the way this argument is presented, that conclusion is long past and we are presented with the statement as fact.

Tani Wolff

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